Q: What are the prime factors of the number 119,168?

 A: 2, 7, 19

Why are those the prime factors of the number 119,168?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 119,168

119,168
Factor Arrows
259,584
Factor Arrows
229,792
Factor Arrows
214,896
Factor Arrows
27,448
Factor Arrows
23,724
Factor Arrows
21,862
Factor Arrows
2931
Factor Arrows
7133
Factor Arrows
719

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 7, 19

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 7 x 19 = 119,168

This can also be written as 27 x 72 x 191 = 119,168

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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